Pontyfeni Fm, B. rushtoni biozone, Whitland, UK (Ordovician of the United Kingdom)

Where: England, United Kingdom (52.0° N, 5.0° W: paleocoordinates 66.0° S, 20.5° W)

• local area-level geographic resolution

When: Bergamia rushtoni trilobite zone, Pontyfenni Formation, Arenig (478.6 - 466.0 Ma)

• Sometimes Pont y Fenni

• formation-level stratigraphic resolution

Environment/lithology: marine; lithified shale and chert

• Dark mudstone with siliceous nodules; deep (> 200 m) but oxygenated setting with blind trilobites

Size class: macrofossils

Preservation: mold/impression

Primary reference: R. A. Fortey and R. M. Owens. 1978. Early Ordovician (Arenig) stratigraphy and faunas of the Carmarthen District, southwest Wales. Bulletin of the British Museum of Natural History (Geology) 30(3):225-294 [A. Miller/P. Novack-Gottshall/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 3704: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 07.08.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Pterobranchia
 Graptoloidea - Tetragraptidae
Pseudotrigonograptus sp.
 Graptoloidea - Dichograptidae
Didymograptus sp.
Didymograptus sp. McCoy 1851 graptolite
 Graptoloidea - Phyllograptidae
Tetragraptus sp.
Tetragraptus sp. Salter 1863 graptolite
Stylophora
 Cornuta - Hanusiidae
Reticulocarpos sp.
 Cornuta - Cothurnocystidae
Cothurnocystis sp.
Cothurnocystis sp. Bather 1913
 Mitrata - Kirkocystidae
Balanocystites sp., "Anatifopsis sp." = Anatifopsis, "Guichenocarpos sp." = Anatifopsis
"Anatifopsis sp." = Anatifopsis Barrande 1872
"Guichenocarpos sp." = Anatifopsis Barrande 1872
 Mitrata -
Lagynocystis sp., Mitrocystella sp.
Artiopoda
 Agnostida - Metagnostidae
Arthrorhachis sp., "Corrugatagnostus sp." = Corrugatagnostus, "Segmentagnostus sp." = Corrugatagnostus
Arthrorhachis sp. Hawle and Corda 1847
"Corrugatagnostus sp." = Corrugatagnostus Kobayashi 1939
"Segmentagnostus sp." = Corrugatagnostus Kobayashi 1939
 Agnostida -
Leiagnostus sp.
Leiagnostus sp. Jaekel 1909
Trilobita
 Ptychopariida - Shumardiidae
Shumardia sp.
Shumardia sp. Billings 1862 trilobite
 Asaphida - Nileidae
Illaenopsis sp., Barrandia sp.
Illaenopsis sp. Salter 1865 trilobite
Barrandia sp. M'Coy 1849 trilobite
 Asaphida - Cyclopygidae
Degamella sp., Cyclopyge sp., Prospectatrix sp., Psilacella sp., Pricyclopyge sp., Bohemilla sp., Circulocrania sp., Sagavia sp., Girvanopyge sp., Microparia sp., Ellipsotaphrus sp.
Degamella sp. Marek 1961 trilobite
Cyclopyge sp. Hawle and Corda 1847 trilobite
Prospectatrix sp. Fortey 1981 trilobite
Psilacella sp. Whittard 1952 trilobite
Pricyclopyge sp. Richter and Richter 1954 trilobite
Bohemilla sp. Barrande 1872 trilobite
Circulocrania sp. Fortey and Owens 1987 trilobite
Sagavia sp. Koroleva 1967 trilobite
Girvanopyge sp. Kobayashi 1960 trilobite
Microparia sp. Hawle and Corda 1847 trilobite
Ellipsotaphrus sp. Whittard 1952 trilobite
 Trinucleida - Raphiophoridae
Ampyx sp.
Ampyx sp. Dalman 1827 trilobite
 Trinucleida - Trinucleidae
? Stapeleyella sp., Bergamia rushtoni
? Stapeleyella sp. Whittard 1955 trilobite
originally entered as "Stapeleyella? sp."
 Trinucleida - Dionididae
? Dionidella sp.
? Dionidella sp. Prantl and Pribyl 1950 trilobite
originally entered as "Dionidella? sp."
 Corynexochida - Illaenidae
Ectillaenus sp.
Ectillaenus sp. Salter 1867 trilobite
 Phacopida - Dalmanitidae
Ormathops sp.
Ormathops sp. Delo 1935 trilobite
 Phacopida - Pliomeridae
Placoparia sp.
Placoparia sp. Hawle and Corda 1847 trilobite
 Phacopida - Homalonotidae
Colpocoryphe sp.
Colpocoryphe sp. Novak and Perner 1918 trilobite
 Odontopleurida - Odontopleuridae
Selenopeltis sp.
Selenopeltis sp. Hawle and Corda 1847 trilobite